Dopamine hydrochloride was converted to monomer N,N-diallyldopamine hydrochloride [(3,4-(HO)₂C₆H₄CH₂CH₂NH⁺(CH₂CHCH₂)₂ Cl⁻] (I). Polymerization of monomer diallydimethylammonium chloride (II) gave homocyclopolymer III, while its copolymerization with 5–20 mol% I afforded copolymers IV. Likewise, II/SO₂ copolymerization and I/II/SO₂ terpolymerization gave respective alternate copolymer V and terpolymers VI. Copolymer IV (containing 20 mol% dopamine motifs) imparted excellent inhibitions of mild steel corrosion in 1 M HCl as well as synergistic inhibition in the presence of iodide ions in 15% HCl at 60 °C. Increasing mol% of dopamine motifs in IV resulted in increasing corrosion protection and demonstrated better efficiency than monomer II and its homopolymer III. Cationic polyelectrolyte IV has been shown to form polyelectrolyte complex/coacervate with three model anionic polyelectrolytes.

多巴胺盐酸盐被转化为单体N , N-二烯丙基多胺盐酸盐[(3,4-(HO) ₂ C ₆ H ₄ CH ₂ CH ₂ NH ⁺ (CH ₂ CH CH ₂ ) ₂ Cl ^- ] ( I )。单体聚合二烯丙基二甲基氯化铵 ( II ) 得到均聚环聚合物III，而它与 5–20 mol% I共聚得到共聚物IV。同样，II/SO ₂共聚和I/II/SO₂三元聚合得到相应的交替共聚物V和三元共聚物VI。共聚物IV（含有 20 mol% 多巴胺基序）在 1 M HCl 中具有优异的低碳钢腐蚀抑制作用，并且在 60 °C 的 15% HCl 中存在碘离子时具有协同抑制作用。增加IV中多巴胺基序的 mol% 会导致腐蚀保护增加，并表现出比单体II及其均聚物III更好的效率。已显示阳离子聚电解质IV与三种模型阴离子聚电解质形成聚电解质络合物/凝聚层。